JP2012075001A - Stereoscopic image display method and stereoscopic image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make stereoscopic vision quicker and easier to reduce a burden on an observer, in a stereoscopic image display method and device displaying a stereoscopic image so as to be stereoscopically viewed.SOLUTION: In a stereoscopic image display method, a specific part (N, C, or the like) having a large change amount of a physical characteristic of an image, is selected. First specific areas (R1-R8) on a right-eye image XR1 and second specific areas on a left-eye image, which include the specific part, are extracted. Image processing is performed to a first processing target area, which is an area other than the first specific areas in the right-eye image, and to a second processing target area, which is an area other than the second specific areas in the left-eye image. A stereoscopic image which consists of the right-eye image SR and the left-eye images to which the image processing is performed, is displayed stereoscopically. After an observer can view the stereoscopic image stereoscopically, the image processing is cancelled.

Description

  The present invention relates to a stereoscopic image display method and a stereoscopic image display apparatus for displaying a stereoscopic image composed of a right-eye image and a left-eye image with parallax captured from a subject so as to be stereoscopically viewable.

  Conventionally, it is known that stereoscopic viewing is possible based on a set of two images (hereinafter referred to as a stereoscopic image or a stereo image) composed of a right-eye image and a left-eye image having parallax. Such a stereoscopic image is generated based on a plurality of images having parallax obtained by photographing the same subject from different directions.

  Such generation of stereoscopic images is used not only in the fields of digital cameras and televisions but also in the field of radiographic imaging. That is, the patient is irradiated with radiation from different directions, the radiation transmitted through the subject is detected by a radiation image detector, and a plurality of radiation images having parallax are obtained, and these radiations are acquired. A stereoscopic image is generated based on the image. And by generating a stereoscopic image in this way, a radiographic image with a sense of depth can be observed, and a radiographic image more suitable for diagnosis can be observed.

  By the way, stereoscopic vision is performed by synthesizing two images of a stereoscopic vision image in the brain and recognizing them as a three-dimensional image. Therefore, in general, stereoscopic viewing based on such a stereoscopic image is influenced by familiarity and weakness, and depending on the observer, it takes time and feels tired.

  The cause of time-consuming and feeling tired in stereoscopic viewing is not clear, but the focus adjustment does not work effectively because the observation image is flat, and different visual images are perceived by both eyes. It is speculated that this is because of a phenomenon (binocular rivalry). Therefore, when an image focused in a wide area, such as a photographic image, is used as a stereoscopic image, the time required for stereoscopic viewing as described above and the feeling of fatigue are significant.

  Therefore, Patent Literature 1 extracts a pair of common points in the right-eye image and the left-eye image that are not associated with each other from each of the right-eye image and the left-eye image, and selects one of the two regions. A method for reducing the binocular rivalry in stereoscopic vision and reducing the observer's feeling of fatigue by eliminating them is disclosed.

JP 2006-42298 A

  However, in the method of Patent Document 1, even if the above regions are excluded, there are cases where only a small region of the stereoscopic image is excluded. Therefore, the method as disclosed in Patent Document 1 may not be sufficient as assistance for realizing quick and easy stereoscopic vision.

  The present invention has been made in view of the above problems, and in a stereoscopic image display method and a stereoscopic image display device for displaying a stereoscopic image in a stereoscopic manner, stereoscopic viewing can be performed more quickly and easily to an observer. An object of the present invention is to provide a stereoscopic image display method and a stereoscopic image display apparatus that can further reduce the load.

In order to solve the above problems, a stereoscopic image display method according to the present invention includes:
In a stereoscopic image display method for displaying a stereoscopic image composed of a right-eye image and a left-eye image with parallax captured from a subject so as to enable stereoscopic viewing,
Select a specific portion of the subject that can be visually recognized in both the right-eye image and the left-eye image and having a large amount of change in the physical characteristics of the image,
Extracting a first specific region on the right-eye image including the specific portion and a second specific region on the left-eye image including the specific portion;
Image processing is performed on a first processing target region that is a region other than the first specific region in the right-eye image and a second processing target region that is a region other than the second specific region in the left-eye image;
A stereoscopic image composed of the right-eye image subjected to the image processing and the left-eye image subjected to the image processing is displayed so as to be stereoscopically viewable.
The image processing is canceled after the observer can stereoscopically view the image.

  In this specification, “display stereoscopically” or “display stereoscopically” means that the constituent images of a stereoscopic image are displayed side by side, or the constituent images of a stereoscopic image are periodically switched and displayed. Or displaying on a lenticular display, or displaying a constituent image of a stereoscopic image while satisfying all the requirements for stereoscopic viewing on the stereoscopic image display side.

“Release image processing” means that a stereoscopic image composed of a right-eye image and a left-eye image that has not been subjected to image processing is stereoscopically displayed.
“Physical characteristics of an image” includes a pixel value, image intensity, frequency characteristics, and the like.

  In the stereoscopic image display method according to the present invention, it is preferable to select, as the specific portion, a portion having a large amount of change in pixel value in the right-eye image and the left-eye image. It is more preferable to select a linear portion.

  In the stereoscopic image display method according to the present invention, the image processing includes processing for blurring the processing target region, processing for reducing the contrast of the processing target region, processing for reducing the saturation or brightness of the processing target region, and processing target region It is preferable that at least one of the processes for bringing the hue of the color closer to the cold color system.

Furthermore, the stereoscopic image display apparatus according to the present invention is
Stereoscopic display including a display unit that displays an image, and a display control unit that displays a stereoscopic image composed of a right-eye image and a left-eye image with parallax captured from the subject so that the stereoscopic image can be displayed on the display unit In an image display device,
A selection unit that selects a specific part of a subject that can be visually recognized in both the right-eye image and the left-eye image and has a large amount of change in physical characteristics of the image;
An extraction unit for extracting a first specific region on the right-eye image including the specific portion and a second specific region on the left-eye image including the specific portion;
Processing for performing image processing on a first processing target region that is a region other than the first specific region in the image for the right eye and a second processing target region that is a region other than the second specific region in the image for the left eye With
After the display control unit displays the stereoscopic image composed of the image for the right eye subjected to the image processing and the image for the left eye subjected to the image processing so as to be stereoscopically viewed, and the observer can stereoscopically view, The image processing is canceled.

  In the stereoscopic image display device according to the present invention, the selection unit preferably selects, as the specific part, a part having a large amount of change in pixel value in the right-eye image and the left-eye image. In this case, it is more preferable to select a dotted portion or a linear portion.

  According to the stereoscopic image display method and the stereoscopic image display device according to the present invention, a stereoscopic image that displays a stereoscopic image composed of a right-eye image and a left-eye image that are captured with a parallax in a stereoscopic manner is displayed in a stereoscopic manner. In the display of the visual image, a specific part that is visible in both the right-eye image and the left-eye image and has a large amount of change in physical properties of the image is selected, and the right eye including the specific part is selected. The first specific area on the image for use and the second specific area on the image for the left eye including the specific portion are extracted, and the first processing target that is an area other than the first specific area in the image for the right eye The left eye image subjected to the image processing by performing image processing on the second processing target region that is a region other than the second specific region among the region and the left eye image, and the left eye image subjected to the image processing Image The configured stereoscopic image is displayed so that it can be stereoscopically viewed, and after the observer has been able to stereoscopically view, the image processing is canceled. Thus, it is possible to shift to a stereoscopic view of the stereoscopic image of the entire subject to be observed. At this time, at the time when the stereoscopic vision is started, the visible region is limited to the specific region including the specific part in the stereoscopic image, so that the binocular rivalry can be reduced. As a result, in the stereoscopic image display method and the stereoscopic image display device, it is possible to make stereoscopic viewing more quickly and easily and further reduce the burden on the observer as compared with the conventional method.

1 is a schematic configuration diagram of a breast image photographing display system using an embodiment of a stereoscopic image display method and a stereoscopic image display device of the present invention. It is a schematic sectional drawing which shows the arm part of the mammography imaging display system shown in FIG. It is a block diagram which shows schematic structure inside the computer of the breast image radiographing display system shown in FIG. (A) It is a figure explaining the part which can become a specific part which is easy to stereoscopically view in the radiographic image of a breast. (B) It is a figure explaining the part which can become a specific part which is easy to stereoscopically view in the radiographic image of a leg. (A) It is a figure explaining the specific area | region extracted in the radiographic image of a breast. (B) It is a figure explaining the specific area extracted in the radiographic image of a leg. It is a figure explaining the process which makes the specific area in a stereoscopic vision image stand out (making a process target area inconspicuous).

  Hereinafter, although an embodiment of the present invention is described using a drawing, the present invention is not limited to this. In addition, for easy visual recognition, the scale of each component in the drawings is appropriately changed from the actual one.

"Stereoscopic image display method and stereoscopic image display apparatus"
Hereinafter, a breast image photographing and displaying system using an embodiment of a stereoscopic image display method and a stereoscopic image display apparatus of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a breast image radiographing display system 1 of the present embodiment includes a mammography apparatus 10, a computer 8 connected to the mammography apparatus 10, a monitor 9 connected to the computer 8, and an input unit. 7.

  As shown in FIG. 1, the mammography apparatus 10 includes a base 11, a rotary shaft 12 that can move in the vertical direction (Z direction) relative to the base 11, and a rotary shaft 12. 11 and an arm portion 13 connected to the arm portion 13. FIG. 2 shows the front shape of the arm portion 13 as viewed from the right direction (y-axis positive direction) in FIG.

  The arm portion 13 has a shape like an alphabet C, and a radiation table 16 is attached to one end of the arm portion 13 so as to face the imaging table 14 at the other end. The rotation and vertical movement of the arm unit 13 are controlled by an arm controller 31 incorporated in the base 11.

  A radiographic image detector 15 such as a flat panel detector and a detector controller 33 that controls reading of a charge signal from the radiographic image detector 15 are provided inside the imaging table 14. Further, in the imaging table 14, a charge amplifier that converts the charge signal read from the radiation image detector 15 into a voltage signal, a correlated double sampling circuit that samples the voltage signal output from the charge amplifier, a voltage A circuit board or the like provided with an AD conversion unit for converting a signal into a digital signal is also provided, but detailed description thereof is omitted.

  The imaging table 14 is configured to be rotatable with respect to the arm unit 13, so that even when the arm unit 13 is rotated about the rotation axis 12 with respect to the base 11, the imaging table 14 is Is maintained in a certain orientation.

  The radiation image detector 15 can repeatedly perform recording and reading of a radiation image, and may use a so-called direct type radiation image detector that directly receives radiation and generates charges. Alternatively, a so-called indirect radiation image detector that converts radiation once into visible light and converts the visible light into a charge signal may be used. As a radiation image signal readout method, a radiation image signal is read out by turning on / off a TFT (thin film transistor) switch, or a radiation image is emitted by irradiating reading light. It is desirable to use a so-called optical readout system in which a signal is read out, but the present invention is not limited to this, and other systems may be used.

  The radiation irradiation unit 16 is provided with a radiation source 17 and a radiation source controller 32. The radiation source controller 32 controls the timing of irradiating radiation from the radiation source 17 and the radiation generation conditions (tube current, time, tube current time product, etc.) in the radiation source 17.

  At the center of the arm 13, a compression plate 18 that is disposed above the imaging table 14 and presses and compresses the breast M, a support unit 20 that supports the compression plate 18, and a support unit 20 in the vertical direction (Z And a moving mechanism 19 that moves in a direction). The position of the compression plate 18 and the compression pressure are controlled by the compression plate controller 34.

  The computer 8 that controls the operation of the mammography apparatus 10 includes a central processing unit (CPU) and a storage device such as a semiconductor memory, a hard disk, and an SSD. The control shown in FIG. A unit 8a, a radiation image storage unit 8b, a display control unit 8c, a selection unit 8d, an extraction unit 8e, and a processing unit 8f are configured.

  The controller 8a outputs predetermined control signals to the various controllers 31 to 35 to control the entire system. A specific control method will be described in detail later.

  The radiation image storage unit 8b stores a radiation image signal acquired by the radiation image detector 15.

  The display control unit 8c reads out the radiographic image signal stored in the radiographic image storage unit 8b, and generates a stereoscopic image composed of the radiographic image for the right eye and the radiographic image for the left eye based on the radiographic image signal. . Then, the display control unit 8c outputs the generated stereoscopic image to the selection unit 8d, the extraction unit 8e, and the processing unit 8f, and causes each of them to execute necessary processing related to the stereoscopic image. The display control unit 8c receives a stereoscopic image on which necessary processing has been executed, and displays the stereoscopic image of the breast M on the monitor 9 so as to enable stereoscopic viewing (stereoscopic display). That is, the display control unit 8c displays a stereoscopic image including a right-eye image that has been subjected to image processing, which will be described later, and a left-eye image that has been subjected to the image processing, in a stereoscopic manner.

  The display control unit 8c cancels the image processing after the observer can stereoscopically view. For example, the display control unit 8c determines whether or not the observer can stereoscopically view based on an operation by the observer on the breast image capturing and displaying system 1 indicating that the observer has stereoscopically viewed. Such an operation can be performed by the input unit 7 or the like. Alternatively, the display control unit 8c determines whether or not the observer has been stereoscopically viewed by pretending that the observer has been able to stereoscopically view when a predetermined time set in advance has elapsed. In such a case, an operation by an observer necessary for the former case can be omitted.

  The selection unit 8d selects a specific portion that can be visually recognized in both the right-eye image and the left-eye image and that is a portion of a subject that is easily stereoscopically viewed, and has a large amount of change in physical characteristics of the image. . As the specific portion, it is preferable to select a portion having a large amount of change in the pixel value in the right-eye image and the left-eye image, and in this case, it is more preferable to select a dotted portion or a linear portion. The selection unit 8d may select a plurality of specific parts. However, from the viewpoint of facilitating and facilitating stereoscopic viewing, it is preferable that there is only one specific part in order to minimize the information given to both eyes. 4A, for example, in the radiographic image XR1 of the breast M, the contour of the breast M itself, the nipple marker N when performing radiography, the calcification C deposited in the breast M, and Examples thereof include a wire hook F for breast M surgery. 4B, for example, in the radiographic image XR2 of the foot Le, the contours of the bones (B, B1, and B2), the fixing plate P, the wire W, and the like can be cited. it can. Then, the selection unit 8d outputs the position information of the selected specific part to the extraction unit 8e.

  The extraction unit 8e extracts the first specific region on the right-eye image including the specific portion selected by the selection unit 8d and the second specific region on the left-eye image including the specific portion. At this time, the first specific area and the second specific area are areas including the specific portion. The first specific area and the second specific area are preferably the same in size and shape in consideration of the binocular balance in stereoscopic vision. However, the size and shape are not necessarily the same. This is because stereoscopic viewing is possible if the above-described specific part is included in these specific regions.

  As such a specific region, as shown in FIG. 5A, for example, in the radiographic image XR1 of the breast M, the region R1 that includes the contour of the breast M itself, and the nipple marker N when performing radiography are included. Including a region R2, a region R3 including a calcification C deposited in the breast M, a region R4 including a wire hook F for surgical operation of the breast M, and a plurality of specific portions as described above. Examples of such a region R5 can be given. 5B, for example, the radiographic image XR2 of the foot Le includes a region R6 and a plate P that include the outline of the bone (B, B1, and B2). Examples of the region R7 and the region R8 including the wire W can be given.

  Then, the extraction unit 8e outputs the extracted position information of the specific area to the processing unit 8f.

  The processing unit 8f includes a first processing target region that is a region other than the first specific region in the right eye image and a second processing target region that is a region other than the second specific region in the left eye image. Then, image processing is performed to make both the processing target areas inconspicuous in comparison with the two specific areas. The “inconspicuous” state is, for example, a state in which it is difficult to focus attention, such as being blurred or blurred, a state in which light and darkness are not clear and difficult to watch, and a color is plain (the contrast of saturation is small). Therefore, the image processing includes at least one of a process for blurring the processing target area, a process for reducing the contrast of the processing target area, a process for reducing the saturation or lightness of the processing target area, and a process for bringing the hue of the processing target area closer to a cold color system. One treatment is preferred. By making the processing target area inconspicuous, the specific area becomes relatively conspicuous. Note that it is not necessary to be able to clearly distinguish the degree of conspicuousness of the specific area (degree of inconspicuousness of the processing target area) at the boundary between the specific area and the processing target area. For example, the processing target area may gradually become inconspicuous as the distance from the specific area starts from the boundary.

  For example, when a process for blurring a processing target area is performed, a blurred image is less noticeable than a sharp and clear image. As a specific blurring method, various methods known in this technical field can be used. For example, when the contrast of the processing target region is lowered, for example, it is considered that the stronger contrast is more conspicuous than the surface painted with one color regardless of whether or not it is blurred. An image is composed of pixels, and each pixel has information on hue, saturation, and lightness (three elements of color). Lowering the contrast means averaging the pixels, that is, bringing one of the values of hue, saturation, and brightness close to the values of the surrounding pixels.

  The input unit 7 is configured by a pointing device such as a keyboard and a mouse, for example, and receives an input of shooting conditions and a shooting start instruction by a photographer. Further, if necessary, the input unit 7 specifies a specific part to be selected by the selection unit 8d when there are a plurality of parts that can be regarded as a specific part, or specifies the size or shape of the specific area extracted by the extraction unit 8e. The processing unit 8f may be configured to specify image processing to be performed on the processing target area.

  The monitor 9 is configured to stereoscopically display a stereoscopic image using two radiation image signals stored in the computer 8. As a configuration for stereoscopically displaying a stereoscopic image, for example, radiation images based on two radiation image signals are displayed using two screens, and one of the radiations is displayed by using a half mirror, a polarizing glass, or the like. It is possible to adopt a configuration in which a stereoscopic image is stereoscopically displayed by causing an image to be visually recognized by the observer's right eye and the other radiation image being visually recognized by the observer's left eye. Alternatively, for example, two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and the stereoscopic images may be stereoscopically displayed by observing them with a polarizing glass. Furthermore, it is good also as a structure which displays a stereoscopic vision image by displaying two radiographic images on the 3D liquid crystal which can be stereoscopically viewed like a parallax barrier system and a lenticular system. Alternatively, the right-eye image and the left-eye image may be alternately displayed on a single screen for stereoscopic display. In this case, it is necessary to see the monitor 9 through the stereoscopic glasses on the observer side.

<Shooting process>
Next, imaging processing in the breast image capturing apparatus 10 will be described. First, as shown in FIG. 1, the breast M is disposed on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18. At this time, the arm unit 13 is set to an initial position in a direction perpendicular to the imaging table 14, that is, a position indicated by a solid line in FIG.

  Next, various imaging conditions for each subject are input by the input unit 7 and an input for instructing whether to capture a radiographic image as a stereoscopic image or a radiographic image as a normal two-dimensional image is input. Made. When there is an instruction input for performing the former imaging, the control unit 8a stores a preset imaging angle θ (the magnitude of the angle formed by the radiation irradiation axis with respect to the radiation detection surface normal: see FIG. 2). The information of the photographing angle θ is output to the arm controller 31.

  In this embodiment, it is assumed that θ = 2 ° is stored in advance as information on the shooting angle θ. However, the present invention is not limited to this, and other angles of about 2 ° to 5 ° may be applied to the shooting angle θ. In the present embodiment, the arm portion 13 is configured to rotate around the rotation shaft 12, and the rotation shaft 12 is disposed at substantially the same height as the radiation image detector 15. Therefore, as shown in FIG. 2, the radiation irradiation axes of the radiation sources 17 at different rotational positions intersect each other in the vicinity of the radiation image detector 15. However, the present invention is not limited to this. The arm portion 13 may be rotated so that the radiation irradiation axes intersect each other.

  Next, the arm controller 31 receives the information on the photographing angle θ output from the control unit 8a, and outputs a control signal for rotating the arm unit 13 by + θ from the initial position based on the information on the photographing angle θ. Therefore, the arm portion 13 rotates + 2 ° in accordance with this control signal.

  Subsequently, the control unit 8a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and readout of the radiation image signal. Therefore, radiation is emitted from the radiation source 17 in accordance with this control signal, and a radiation image signal obtained by photographing the breast from the + 2 ° direction is detected by the radiation image detector 15. Next, a radiation image signal is read from the radiation image detector 15 by the detector controller 33. After predetermined signal processing is performed on the radiographic image signal, the radiographic image signal is stored in the radiographic image storage unit 8 b of the computer 8.

  Next, the arm controller 31 once returns the arm unit 13 to the initial position, and then outputs a control signal for rotating the arm unit 13 by −θ from the initial position. As a result, the arm 13 rotates by −2 ° from the initial position.

  Subsequently, the control unit 8a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and readout of the radiation image signal. Therefore, radiation is emitted from the radiation source 17 according to this control signal, and a radiation image signal obtained by imaging the breast from the −2 ° direction is detected by the radiation image detector 15. Next, a radiation image signal is read from the radiation image detector 15 by the detector controller 33. After predetermined signal processing is performed on the radiographic image signal, the radiographic image signal is stored in the radiographic image storage unit 8 b of the computer 8.

  In this way, two radiographic images with parallax are obtained.

  In the present embodiment, two radiographic images constituting a stereoscopic image are taken by changing the radiation irradiation direction in the XZ plane shown in FIG. 2, but the radiation irradiation direction is set in the other direction. Alternatively, a plurality of radiation images may be taken. That is, for example, a plurality of radiographic images may be taken by changing the radiation irradiation direction in the YZ plane (plane perpendicular to the paper surface of FIG. 2) shown in FIG.

<Display processing>
Next, display processing in the breast image photographing display system 1 will be described.
A stereoscopic image of the subject's breast M is displayed on the monitor 9 based on the two radiographic image signals stored in the radiographic image storage unit 8b by the above-described imaging. That is, this stereoscopic image is composed of two radiographic images obtained by the above-described two imaging operations. More specifically, for example, the radiographic image obtained by the first imaging is used as the right-eye image of the stereoscopic image, and the radiographic image obtained by the second imaging is used as the left-eye image of the stereoscopic image. To do.

  The observer inputs an instruction to display a stereoscopic image of the breast M through the input unit 7. In response to the display instruction, two radiation image signals of the subject are read from the radiation image storage unit 8b by the display control unit 8c.

  Then, the radiographic image signal read out by the display control unit 8c is subjected to predetermined signal processing in the selection unit 8d, the extraction unit 8e, and the processing unit 8f.

  This signal processing is performed as follows, for example. FIG. 6 is a diagram for explaining the signal processing of the right-eye image for convenience, but the signal processing is performed on both the right-eye image and the left-eye image. First, as shown in FIG. 6A, the selection unit 8d can visually recognize both the right-eye image and the left-eye image based on the radiographic image signal, and is a physical part of the subject that is easily stereoscopically viewed. A specific portion having a large amount of change in characteristics is selected. In FIG. 6A, the calcification C and the wire hook F in the radiographic image XR1 of the breast M are selected as specific portions. Then, the position information of the selected specific part is output to the extraction unit 8e. Thereafter, the extraction unit 8e extracts a first specific region on the right-eye image including the specific portion. In FIG. 6A, a specific region R5 that includes the specific portion is extracted from the right-eye image. Then, the extracted position information of the specific area is output to the processing unit 8f. Thereafter, the processing unit 8f performs image processing that makes the processing target area inconspicuous in the processing target area that is an area other than the specific area in the right-eye image in comparison with the specific area R5. For example, as illustrated in FIG. 6B, the processing unit 8f generates a mask image XRm that lowers the brightness (luminance) of a portion corresponding to the processing target region. By superimposing the mask image XRm on the right-eye image, a right-eye image in which an area other than the specific area R5 is inconspicuous is obtained (FIG. 6C).

  As for the left-eye image, by obtaining the same procedure for the same specific portion as described above, a left-eye image in which a region other than the specific region including the specific portion is inconspicuous is obtained. The display control unit 8c receives the image for the right eye and the image for the left eye that have been subjected to the image processing as described above, and stereoscopically displays a stereoscopic image composed of these images on the monitor 9.

  First, the observer tries stereoscopic viewing based on a stereoscopic image in which regions other than the specific region are not noticeable. At this time, both eyes pay attention to a specific area that is conspicuous in the stereoscopic image and is easily stereoscopically viewed. Thereby, the influence which a process target area has on a viewer's stereoscopic vision can be made small, and the binocular rivalry which prevents a stereoscopic vision can be reduced. Therefore, the observer can smoothly stereoscopically view the stereoscopic image. Then, after the observer can stereoscopically view, the observer uses the input unit 7 to perform an operation of notifying the display control unit 8c that stereoscopic viewing has been achieved. When such an operation is detected, the display control unit 8c cancels the above-described image processing, and monitors a stereoscopic image composed of the right-eye image and the left-eye image that has not been subjected to the image processing. 9 is displayed stereoscopically.

  In order to stereoscopically display a stereoscopic image that has not been subjected to the image processing, a radiographic image signal may be read from the radiographic image storage unit 8b again. Moreover, you may perform the process which produces | generates the original stereoscopic image based on the stereoscopic image to which the image process was performed. When the image processing is canceled, the observer can confirm all of the radiographic images of the subject while maintaining the stereoscopic state.

  As described above, according to the stereoscopic image display method and the stereoscopic image display device according to the present invention, a stereoscopic image composed of a right-eye image and a left-eye image with a parallax captured from a subject can be stereoscopically viewed. In the display of the stereoscopic image to be displayed, a specific part that is visible in both the right-eye image and the left-eye image and that has a large amount of change in physical properties of the image is selected, and this specific part The first specific area on the right-eye image including the first specific area and the second specific area on the left-eye image including the specific portion are extracted, and the first specific area other than the first specific area in the right-eye image is extracted. The image processing target area and the second processing target area that is an area other than the second specific area in the left-eye image are subjected to image processing, and the right-eye image subjected to the image processing and the image processing are performed. Left Since the stereoscopic image composed of the images for use is displayed so as to be stereoscopically viewable, and the observer can stereoscopically view the image, the image processing is canceled, so that the specific part that is easily stereoscopically viewed is stereoscopically viewed. While maintaining the state as it is, it is possible to shift to a stereoscopic view of a stereoscopic image of the entire subject to be observed. At this time, at the time when the stereoscopic vision is started, the visible region is limited to the specific region including the specific part in the stereoscopic image, so that the binocular rivalry can be reduced. As a result, in the stereoscopic image display method and the stereoscopic image display device, it is possible to make stereoscopic viewing more quickly and easily and further reduce the burden on the observer as compared with the conventional method.

  In the above embodiment, the case where the stereoscopic image display method and the stereoscopic image display apparatus of the present invention are applied to a breast image photographing display system has been described, but the present invention is naturally not limited to this. For example, the present invention can be applied to other medical diagnostic apparatuses, digital cameras, display apparatuses, and the like that use a stereoscopic image display method.

DESCRIPTION OF SYMBOLS 1 Mammography imaging display system 7 Input part 8 Computer 8a Control part 8b Radiation image memory | storage part 8c Display control part 8d Selection part 8e Extraction part 8f Processing part 9 Monitor 10 Mammography apparatus 11 Base 12 Rotating shaft 13 Arm part 14 Photographing Table 15 Radiation image detector 16 Radiation irradiation unit 17 Radiation source 18 Compression plate 19 Movement mechanism 20 Support unit C Calcification F Wire hook Le Foot M Breast N Nipple marker P Plates R1 to R8 Specific area W Wires XR1, XR2 Radiation image XRm Mask image θ Shooting angle

Claims (7)

In a stereoscopic image display method for displaying a stereoscopic image composed of a right-eye image and a left-eye image with parallax captured from a subject so as to enable stereoscopic viewing,
Selecting a specific portion of the subject that can be visually recognized in both the right-eye image and the left-eye image, and having a large amount of change in physical properties of the image;
Extracting a first specific region on the right-eye image including the specific portion and a second specific region on the left-eye image including the specific portion;
An image is displayed in a first processing target region that is a region other than the first specific region in the right eye image, and in a second processing target region that is a region other than the second specific region in the left eye image. Processing,
A stereoscopic image including the right-eye image subjected to the image processing and the left-eye image subjected to the image processing is displayed so as to be stereoscopically viewable;
A stereoscopic image display method, wherein the image processing is canceled after an observer can stereoscopically view the image.   The stereoscopic image display method according to claim 1, wherein a part having a large amount of change in pixel value is selected as the specific part from the right-eye image and the left-eye image.   The stereoscopic image display method according to claim 2, wherein a point-like portion or a linear portion is selected as the specific portion.   The image processing includes processing for blurring the processing target region, processing for reducing the contrast of the processing target region, processing for reducing saturation or lightness of the processing target region, and processing for bringing the hue of the processing target region closer to a cold color system. The stereoscopic image display method according to claim 1, wherein at least one of the processes is performed. A stereoscopic unit comprising: a display unit that displays an image; and a display control unit that displays a stereoscopic image composed of a right-eye image and a left-eye image with parallax captured from the subject so that the stereoscopic image can be displayed on the display unit In the visual image display device,
A selection unit that selects a specific part of the subject that can be visually recognized in both the right-eye image and the left-eye image and has a large amount of change in physical characteristics of the image;
An extraction unit that extracts a first specific region on the right-eye image including the specific portion and a second specific region on the left-eye image including the specific portion;
An image is displayed in a first processing target region that is a region other than the first specific region in the right eye image, and in a second processing target region that is a region other than the second specific region in the left eye image. A processing unit for performing processing,
The display control unit displays a stereoscopic image composed of the image for the right eye subjected to the image processing and the image for the left eye subjected to the image processing so that the viewer can stereoscopically view the stereoscopic image. Then, the stereoscopic image display device is for canceling the image processing.   The stereoscopic image according to claim 5, wherein the selection unit selects, as the specific part, a part having a large amount of change in pixel value in the right-eye image and the left-eye image. Display device.   The stereoscopic image display apparatus according to claim 6, wherein the selection unit is configured to select a dotted portion or a linear portion as the specific portion.